package com.guoxin.facade;

/**
 * @author guoxin
 * @date 2019年8月26日
 */
public class Projector {
	private Projector() {
	}

	private static class ProjectorHandler {
		private static Projector popcorn = new Projector();
	}

	public static Projector getInstance() {
		return ProjectorHandler.popcorn;
	}

	public void on() {
		System.out.println(" Projector on ");
	}

	public void off() {
		System.out.println(" Projector ff ");
	}

	public void focus() {
		System.out.println(" Projector is Projector ");
	}
}
